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When using simultaneously the two DMA channels on a same engine, some transfers are never completed. For example, an endless lock can occur while writing heavily on a RAID5 array (with async-tx offload support enabled). Note that this issue can also be reproduced by using the DMA test client. On a same engine, the interrupt cause register is shared between two DMA channels. This patch make sure that the cause bit is only cleared for the requested channel. Signed-off-by: Simon Guinot <sguinot@lacie.com> Tested-by: Luc Saillard <luc@saillard.org> Acked-by: saeed bishara <saeed.bishara@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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| .. | ||
| ioat | ||
| ipu | ||
| ppc4xx | ||
| at_hdmac_regs.h | ||
| at_hdmac.c | ||
| coh901318_lli.c | ||
| coh901318_lli.h | ||
| coh901318.c | ||
| dmaengine.c | ||
| dmatest.c | ||
| dw_dmac_regs.h | ||
| dw_dmac.c | ||
| fsldma.c | ||
| fsldma.h | ||
| intel_mid_dma_regs.h | ||
| intel_mid_dma.c | ||
| iop-adma.c | ||
| iovlock.c | ||
| Kconfig | ||
| Makefile | ||
| mpc512x_dma.c | ||
| mv_xor.c | ||
| mv_xor.h | ||
| pch_dma.c | ||
| pl330.c | ||
| shdma.c | ||
| shdma.h | ||
| ste_dma40_ll.c | ||
| ste_dma40_ll.h | ||
| ste_dma40.c | ||
| timb_dma.c | ||
| txx9dmac.c | ||
| txx9dmac.h | ||